Three-proofing paint smearing mechanism for bottom of circuit board accessory

Abstract

The utility model discloses a circuit board accessory bottom three-proofing paint smearing mechanism, which relates to the technical field of circuit board processing, and comprises a smearing chamber and an electromagnetic valve, and a spraying assembly used for improving the use performance of the smearing mechanism is arranged in the smearing chamber. The spraying assembly comprises a raw material box, an infusion pump, a first main conveying pipe, a first branch conveying pipe, a first flow dividing pipe, a first spraying head, a second flow dividing pipe and a second spraying head, the infusion pump is arranged on one side of the raw material box, the first main conveying pipe is installed at the output end of the infusion pump, the first branch conveying pipe is arranged on the inner side surface of the first main conveying pipe, and the first flow dividing pipe is installed at the end of the first branch conveying pipe; a first spray head is arranged on the surface of the lower end of the first flow dividing pipe, and a second flow dividing pipe is installed below the first spray head. According to the three-proofing paint smearing mechanism for the bottom of the circuit board accessory, through the arrangement of the spraying assembly and the electromagnetic valve, the smearing mechanism can conduct single-face or double-face selective smearing according to the production and processing requirements of a circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a three-proof paint coating mechanism for the bottom of a circuit board accessory. Background Art

[0002] In order to prevent the circuit board from rusting or getting moldy due to the humid environment during use, which makes the circuit board unusable, a special coating mechanism is generally required to spray the surface of the circuit board with three-proof paint to improve its protective performance after the production of the circuit board and other accessories. The three-proof paint has good high and low temperature resistance. After curing, it will form a layer of transparent protective film to protect the circuit board accessories. It has excellent insulation, moisture-proof, and leakage-proof properties.

[0003] For example, the utility model with application number CN202021099380.6 discloses a three-proof coating mechanism for the bottom of circuit board accessories. The utility model is provided with a fixing component, which can quickly fix and disassemble the circuit board accessories, saving the time for disassembly and assembly, and avoiding wear caused by excessive clamping. By providing a spraying component, the second mounting cross bar can be pushed cyclically during spraying, so that the nozzle moves back and forth to spray the bottom surface of the circuit board accessories, thereby increasing the spraying area and spraying quality. However, during use, the coating mechanism is not easy to perform single-sided or double-sided selective coating according to the requirements of circuit board production and processing. General mechanisms are only easy to perform single-sided coating. When the back of the circuit board needs to be sprayed, it needs to be manually flipped over and put into the coating mechanism again for processing, thereby reducing its production efficiency.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a three-proof coating mechanism for the bottom of the circuit board accessories is proposed. Utility Model Content

[0005] The utility model aims to provide a conformal coating mechanism for the bottom of a circuit board accessory to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-proof paint coating mechanism for the bottom of a circuit board accessory, comprising a coating chamber and a solenoid valve, wherein a spray assembly for improving the performance of the coating mechanism is arranged inside the coating chamber, and the spray assembly comprises a raw material box, a liquid pump, a main pipe 1, a branch pipe 1, a diversion pipe 1, a nozzle 1, a diversion pipe 2 and a nozzle 2, a liquid pump is arranged on one side of the raw material box, and a main pipe 1 is installed at the output end of the liquid pump, a branch pipe 1 is arranged on the inner surface of the main pipe 1, and a diversion pipe 1 is installed at the end of the branch pipe 1, a nozzle 1 is arranged on the lower end surface of the diversion pipe 1, and a diversion pipe 2 is installed below the nozzle 1, a nozzle 2 is arranged on the upper end surface of the diversion pipe 2, and the solenoid valve is located on the outer surface of the main pipe 1.

[0007] Furthermore, a drying chamber is provided at the rear end of the coating chamber, and a purification cylinder is installed at the top of the drying chamber, and an air inlet pipe is provided at the upper end of the purification cylinder.

[0008] Furthermore, an exhaust fan is provided on one side of the purification cylinder, and a main delivery pipe 2 is installed on one side of the exhaust fan, and a branch delivery pipe 2 is provided on the inner surface of the main delivery pipe 2.

[0009] Furthermore, guide plates are provided at the upper and lower ends of the drying chamber, and a placement rack is installed at the front end of the coating chamber.

[0010] Furthermore, multi-stage electric telescopic rods are arranged inside the left and right ends of the placement rack, and fixed plates are installed at the output ends of the multi-stage electric telescopic rods.

[0011] Furthermore, the inner wall surfaces of the coating chamber and the drying chamber are both provided with slide grooves, and a forward and reverse motor is installed on the left side of the coating chamber close to the placement rack.

[0012] Furthermore, a threaded rod is provided at the output end of the forward and reverse motor, and a moving block is installed on the outer surface of the threaded rod, and a ball bearing is provided on the left end surface of the placement rack.

[0013] The utility model provides a three-proof coating mechanism for the bottom of a circuit board accessory, which has the following beneficial effects:

[0014] 1. The utility model can use a liquid pump to extract the conformal coating in the raw material box through the arrangement of the spraying assembly and the solenoid valve, and under the transportation of the main delivery pipe 1 and the branch delivery pipe 1, multiple nozzles 1 and 2 on the branch pipe 1 and the branch pipe 2 can simultaneously apply the conformal coating to the incoming circuit board on both sides, thus avoiding the trouble of the traditional coating mechanism needing to be manually turned over and put into the mechanism again for processing after single-sided coating, thereby improving the production efficiency and practicality of the coating mechanism as a whole, and under the action of the solenoid valve, the coating mechanism can perform single-sided or double-sided selective coating according to the requirements of circuit board production and processing, thereby improving the flexibility of the coating mechanism.

[0015] 2. The utility model can dry the surface of the circuit board after coating with three-proof paint by arranging a drying room, a purification cylinder, an air intake pipe, an exhaust fan, a second main delivery pipe, a second branch delivery pipe and a guide plate. In this way, the problem that the three-proof paint sprayed on the surface of the circuit board is not completely solidified and exposed to the outside world, and is easily adhered to impurities in the air, affecting the use, is avoided, thereby increasing the performance of the coating mechanism. The installation of the placement rack, the multi-stage electric telescopic rod and the fixed plate enables the coating mechanism to apply the three-proof paint to circuit boards of different sizes. The arrangement of the slide groove, the forward and reverse motor, the threaded rod, the moving block and the ball bearing can provide the placement rack with power for repeated movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a three-proof coating mechanism for the bottom of a circuit board accessory of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a coating chamber of a three-proof coating coating mechanism for the bottom of a circuit board accessory of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a placement rack for a three-proof coating mechanism for a circuit board accessory bottom according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of a moving block of a three-proof coating mechanism for applying a circuit board accessory on the bottom.

[0020] In the figure: 1. coating chamber; 2. spraying assembly; 201. raw material box; 202. liquid pump; 203. main delivery pipe 1; 204. branch delivery pipe 1; 205. diversion pipe 1; 206. nozzle 1; 207. diversion pipe 2; 208. nozzle 2; 3. solenoid valve; 4. drying chamber; 5. purification cylinder; 6. air inlet pipe; 7. exhaust fan; 8. main delivery pipe 2; 9. branch delivery pipe 2; 10. guide plate; 11. placement rack; 12. multi-stage electric telescopic rod; 13. fixing plate; 14. slideway; 15. forward and reverse motor; 16. threaded rod; 17. moving block; 18. ball bearing. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] like Figure 1 and Figure 3 As shown, a three-proof coating mechanism for the bottom of a circuit board accessory includes a coating chamber 1 and a solenoid valve 3. A spray assembly 2 for improving the performance of the coating mechanism is arranged inside the coating chamber 1, and the spray assembly 2 includes a raw material box 201, a liquid pump 202, a main pipe 203, a branch pipe 204, a diverter pipe 205, a nozzle 206, a diverter pipe 207 and a nozzle 208. A liquid pump 202 is arranged on one side of the raw material box 201, and a main pipe 203 is installed at the output end of the liquid pump 202, a branch pipe 204 is arranged on the inner surface of the main pipe 203, and a diverter pipe 205 is installed at the end of the branch pipe 204, and the lower end of the diverter pipe 205 is provided. A nozzle 206 is arranged on the surface, and a shunt pipe 207 is installed below the nozzle 206, a nozzle 208 is arranged on the upper end surface of the shunt pipe 207, and the solenoid valve 3 is located on the outer surface of the main delivery pipe 203. The arrangement of the spraying assembly 2 and the solenoid valve 3 enables the coating mechanism to perform single-sided or double-sided selective coating according to the requirements of circuit board production and processing. The inner wall surfaces of the coating chamber 1 and the drying chamber 4 are provided with slide grooves 14, and a forward and reverse motor 15 is installed on the left side of the coating chamber 1 near the placement rack 11, a threaded rod 16 is arranged at the output end of the forward and reverse motor 15, and a moving block 17 is installed on the outer surface of the threaded rod 16, and a ball bearing 18 is arranged on the left end surface of the placement rack 11.

[0023] like Figure 2 As shown, a drying chamber 4 is provided at the rear end of the coating chamber 1, and a purification cylinder 5 is installed at the top of the drying chamber 4, an air inlet pipe 6 is provided at the upper end of the purification cylinder 5, an exhaust fan 7 is provided on one side of the purification cylinder 5, and a main delivery pipe 8 is installed on one side of the exhaust fan 7, and a branch delivery pipe 9 is provided on the inner surface of the main delivery pipe 8, and a guide plate 10 is provided at the upper and lower ends of the drying chamber 4, and a placement rack 11 is installed at the front end of the coating chamber 1, and a multi-stage electric telescopic rod 12 is provided inside the left and right ends of the placement rack 11, and a fixing plate 13 is installed at the output end of the multi-stage electric telescopic rod 12. The drying chamber 4, the purification cylinder 5, the air inlet pipe 6, the exhaust fan 7, the main delivery pipe 8, the branch delivery pipe 9 and the guide plate 10 can be used for drying the surface of the circuit board after the three-proof paint is applied, which can increase the performance of the coating mechanism.

[0024] In summary, the three-proof coating mechanism at the bottom of the circuit board accessory is first based on Figure 1 , Figure 2 , Figure 3 and Figure 4In the structure shown in the figure, when in use, people can place the circuit board to be coated with three-proof paint on the inner side of the placement rack 11, and let one end of it touch one side of the rack body, then control the multi-stage electric telescopic rod 12 (model ST-801) inside the placement rack 11 to start, let it shrink and drive the fixed plate 13 at the output end to gradually approach the other end of the circuit board, so as to complete the clamping and fixing of the circuit board, and then start the forward and reverse motor 15 (model 70KTYZ) to drive the threaded rod 16 at the output end to rotate clockwise, and as it rotates, it will be threadedly connected with the moving block 17 on the surface, It is driven to move horizontally, so that the placement rack 11 connected to it with the circuit board fixed thereon can be transferred into the coating chamber 1. At the same time, the ball 18 on one side of the placement rack 11 will also change its position in the slide groove 14 on the inner wall of the coating chamber 1 to ensure the stability of the placement rack 11 during transmission. When the placement rack 11 with the circuit board fixed thereon enters the coating chamber 1, the liquid pump 202 on its top will start to extract the three-proof paint in the raw material box 201, and then it will enter the two branch pipes 204 respectively under the transportation of the main delivery pipe 1 203. At this time, the branch pipe 1 204 will input the three-proof paint into their respective corresponding The shunt pipe 1 205 and the shunt pipe 2 207 can make the corresponding nozzles 1 206 and 208 spray the three-conformal paint at the same time, and the installation positions of the two are opposite to each other, so the circuit board on the placement rack 11 that is conveyed in can be painted on both sides at the same time. If only one side needs to be coated with the three-conformal paint, it is only necessary to close the solenoid valve 3 on the main pipe 1 203, and only one branch pipe 1 204 can be used to transport the three-conformal paint. After the circuit board is coated with the three-conformal paint, the forward and reverse motors 15 will continue to work to transport it into the drying chamber 4, and the exhaust fan 7 at the top will start to The air is sucked into the purification cylinder 5 through the air inlet pipe 6. At this time, the filter plate inside it will filter the impurities in the incoming air, and the filtered air will continue to be transmitted through the main pipeline 2 8, enter the two branch pipelines 2 9 respectively, and come to the electric heating network at the upper and lower ends of the corresponding drying chamber 4. At this time, as the air continues to enter and flow, the heat generated by the electric heating network will be carried into the drying chamber 4, and under the guidance of the guide plate 10, it will be blown to the surface of the circuit board on the placement rack 11 in the room, so that the three-proof paint on the surface will be accelerated to solidify, and as it moves slowly and evenly, the drying of the circuit board is completed.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A conformal coating mechanism for the bottom of a circuit board accessory, comprising a coating chamber (1) and a solenoid valve (3), characterized in that: The coating chamber (1) is provided with a spray assembly (2) for improving the performance of the coating mechanism, and the spray assembly (2) comprises a raw material box (201), a liquid extraction pump (202), a main delivery pipe (203), a branch delivery pipe (204), a diversion pipe (205), a nozzle (206), a diversion pipe (207) and a nozzle (208). The liquid extraction pump (202) is provided on one side of the raw material box (201), and the main delivery pipe (203) is installed at the output end of the liquid extraction pump (202). (203), a branch pipe (204) is arranged on the inner surface of the main pipe (203), and a diversion pipe (205) is installed at the end of the branch pipe (204), a nozzle (206) is arranged on the lower end surface of the diversion pipe (205), and a diversion pipe (207) is installed below the nozzle (206), and a nozzle (208) is arranged on the upper end surface of the diversion pipe (207), and the solenoid valve (3) is located on the outer surface of the main pipe (203).

2. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 1, characterized in that: A drying chamber (4) is arranged at the rear end of the coating chamber (1), and a purification cylinder (5) is installed at the top end of the drying chamber (4), and an air inlet pipe (6) is arranged at the upper end of the purification cylinder (5).

3. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 2, characterized in that: An exhaust fan (7) is provided on one side of the purification cylinder (5), and a second main delivery pipe (8) is installed on one side of the exhaust fan (7), and a second branch delivery pipe (9) is provided on the inner surface of the second main delivery pipe (8).

4. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 2, characterized in that: Guide plates (10) are provided at the upper and lower ends of the drying chamber (4), and a placement rack (11) is installed at the front end of the coating chamber (1).

5. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 4, characterized in that: Multi-stage electric telescopic rods (12) are arranged inside the left and right ends of the placement rack (11), and a fixing plate (13) is installed at the output end of the multi-stage electric telescopic rod (12).

6. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 4, characterized in that: The inner wall surfaces of the coating chamber (1) and the drying chamber (4) are both provided with a slide groove (14), and a forward and reverse motor (15) is installed on the left side of the coating chamber (1) close to the placement rack (11).

7. The conformal coating mechanism for the bottom of a circuit board accessory according to claim 6, characterized in that: The output end of the forward and reverse motor (15) is provided with a threaded rod (16), and a moving block (17) is installed on the outer surface of the threaded rod (16); and a ball bearing (18) is provided on the left end surface of the placement rack (11).

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